d. FTP客户端，根据init文件的设定，到服务器下载文件到当前的目录中。文件名的前面以P打头，加上进程号，在加上init文件中设定的文件名。(如Process27310-1.tar.gz)
e. 注意在init文件中IP 目的地址要设定成服务器的真实地址对应的虚地址。
2.仿真器的配置
a. 仿真器的工作脚本
set ns [new Simulator]
$ns use-scheduler RealTime
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
$ns map 10.88.88.81 10.88.88.99 $n2
$ns map 10.88.88.81 10.88.88.99 $n3
$ns map 10.88.88.74 21 10.88.88.98 $n1
$ns duplex-link $n2 $n1 10Mb 10ms DropTail
$ns duplex-link $n3 $n1 10Mb 10ms DropTail
set myfilter [new InThread]; # Create the bpf
set dev [$myfilter open readonly eth0]
$myfilter filter "dst host 10.88.88.98 or dst host 10.88.88.99"
set ipnet2 [new Agent/OutThread]; # Create a Network agent
$ipnet2 open writeonly
$ns attach-agent $n2 $ipnet2; # Attach agent to the node.
